Medical Expert Witness Forensic Toxicologist | Medical Expert Witness Services & More | Dr. Nachman Brautbar

Internal Medicine

Internal medicine specialists focus on adult medicine and have a wide-range of knowledge pertaining to complex diseases that affect adults. A doctor of internal medicine, like Dr. Brautbar, is often referred to as an "internist." An internist is often called upon to act as consultants to other physicians to help them solve more difficult diagnostic problems.

With in-depth training in adult medicine, an internist (internal medicine doctor) is your best choice to help you understand the increasingly complex world of medical care. A physician of internal medicine can serve as your primary care doctor but is unique in that they do not perform surgery, do not deliver babies and do not treat children. They serve as specialists in the field of internal medicine.

Dr. Brautbar is board-certified in internal medicine and provides medical opinion in regards to all issues covering the essentials of primary care internal medicine which incorporates an understanding of the physiology and pathology of internal organs, with the medical diagnosis and treatment of organs. Because internal medicine is expansive, Dr. Brautbar has continually updated his knowledge in many areas including allergy, blood diseases, cancer, diabetes, digestive diseases, diseases of the heart and blood vessels, infections, respiratory disorders, hormonal disorders, liver disease, and arthritis. Dr. Brautbar's practice is based in Los Angeles, California. Dr. Brautbar can provide expert medical opinion in regards to internal medicine, among others (see list below):

  • Lung Disease
  • Alcohol Effects
  • Drugs of Abuse
  • Cardiovascular Disease
  • Gastroenterology
  • Allergy / Immunology
  • Cerebrovascular Incidents
  • Building-Related Illness
  • Hypertensive Disease
  • Diabetes Mellitus
  • Coronary Artery Disease
  • Autoimmune Disorders
  • Upper Respiratory Tract System
  • Central Nervous System
  • Peripheral Nervous System
  • Blood Vessel Disorders
  • Liver (Hepatic) Disease - Liver Failure, Hepatitis A, B & C, Cirrhosis, etc.
  • Pulmonary Diseases - Pulmonary Fibrosis, Interstitial Lung Disease, RADs, COPD, Asthma, etc.
  • Neurotoxicology
  • Kidney Disease


Dr. Brautbar is a board-certified internist and nephrologist, and certified in forensic medicine. If you are interested in retaining Dr. Brautbar for forensic and expert witness testimony services, please submit the Contact Form.


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